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The United States Pharmacopeia (USP) is a scientific, not-for-profit organization that sets public standards for medicines, supplements, and food ingredients. The USP Verified mark on Nature Made’s products tells you that they have been independently verified for quality, purity, strength, disintegration or dissolution (the ability for the tablets to breakdown in the stomach so that the dietary ingredients can be absorbed) and consistency.

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Vitamin B1 100 mg

Tablets

Vitamin B1, or thiamin, is important for cellular energy production.†

Helps convert food into cellular energy†

Count

100

Type

Tablets

Frequency

1 Daily

Dosage

100 mg

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We're sorry but the product you've selected was not found at a store within your specified area. To increase the distance of your search or choose another product click here. If you'd like additional assistance in locating a product, please contact us at 1-800-276-2878 .

We're sorry but the zipcode that you provided was not found. Please update zipcode and try your search again. If you'd like additional assistance in locating a product, please contact us at 1-800-276-2878 .

Product Details

Vitamin B1, also known as thiamin, is part of the family of B vitamins. It helps support cellular energy production and normal nervous system function.†

Helps convert food into cellular energy†

Helps support normal nervous system function†

Nature Made® Vitamin B1 100 mg is guaranteed to meet our high quality standards – it is made from carefully selected ingredients under strict manufacturing processes.

#1 Pharmacist Recommended Letter Vitamin Brand*

United States Pharmacopeia (USP) Verified

No Artificial Flavors

No Color Added

No Preservatives

No Yeast or Starch

Gluten Free

*Based on US News & World Report - Pharmacy Times Survey of pharmacist recommending in this category.

Dosage and Interactions

When to Take:

Suggested Use: Take one tablet daily, with a meal. For easier swallowing, take with water before and during ingestion.

Interactions:

Vitamin B1(thiamin) should be avoided when taking:

Current research does not indicate that this vitamin should be avoided when taking prescription drugs

Vitamin B1 (thiamin) should be used with caution when combined with:

Current research does not indicate that this vitamin should be used with caution when taking prescription drugs

Given that no two people are alike, if you are taking any medications you should be aware that potential drug-nutrient interactions may occur and are encouraged to consult a health care professional before using this product. Combining certain prescription drugs and dietary supplements can lead to undesirable effects such as:

Diminished drug effectiveness

Reduced supplement effectiveness

Impaired drug and/or supplement absorption

FAQs

Is it better to take vitamin B1 (thiamin) by itself or with other B vitamins?

Since the B vitamins are involved in similar bodily functions and sometimes depend on the presence of other B vitamins, it may be beneficial to get the B vitamins through a B-complex supplement instead of taking each one individually. However, there may be times when a doctor or other health care professional suggests taking one B vitamin for a specific reason.

What are some dietary sources of vitamin B1?

Vitamin B1 (thiamin) is found in a wide variety of foods. The best sources of thiamin are pork and whole grains or enriched grain products. But thiamin can also be found in organ meats, red meats, yeast, nuts, sunflower seeds, peas, milk, cauliflower, spinach and legumes.

Quality

For 40 years, we have been obsessed with quality at Nature Made®. From ingredient sourcing, to industry-leading manufacturing practices, to our third-party verification approach, we believe it is our responsibility to lead in delivering quality products and a quality consumer experience. For more information, click here.

At Nature Made, we’re committed to quality. That’s why we work with USP, an independent organization that tests for quality and purity. The Nature Made difference is easy to see — just look for the USP Verified Mark on the label of our products.

Resources

* Based on a survey of pharmacists who recommend branded vitamins and supplements.Nature Made may make changes to products from time to time. Please consult the label on the product that you purchased for the most accurate product information.

† These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.